Balance scale



FIG. 1 is a side perspective view of a balance scale incorporating thescale in accordance with the new design;

FIG. 2 is a side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a rear elevational view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a left side partly cross elevational view thereof.

The broken line showing is for illustrative purposes only and forms nopart of the claimed design.

The ornamental design for balance scale, as shown and described.